US 6,851,900 B2 · Hole cutting tool

Abstract

A hole cutting tool (10) configured for cutting an accurately located and precisely shaped hole in a surface, such as a wall (W) of a finished residential or commercial building is disclosed. The tool (10) provides a frame assembly (12) which is self-adhering to the surface (W) and carries removable templates (14, 146-152) for handsfree use in cutting an accurately located and precisely shaped hole. The unique frame assembly (12) provides multiple selectable, pneumatically isolated suction chambers (50,52) that enable the self-adhesion function even when the frame assembly (12) is placed over existing holes in the surface (W). The suction chambers (50,52) are formed in part by a unique corrugated gasket (56) that enables the frame assembly (12) to self-adhere to porous surfaces. The removable template (14) enables dust particles created during the cutting process to be simultaneously vacuumed away regardless of the orientation of the template (14) relative to the frame assembly (12).

Claims54

Dependent claims

A hole cutting tool for cutting a hole in a surface, said tool comprising:

a portable frame assembly adapted to be selectively placed against the surface in which the hole is to be cut,
said portable frame assembly including a first attachment chamber and a second attachment chamber pneumatically isolated from the first chamber when the frame is placed against the surface;
a template supported in the frame assembly and positioned at least in part between the first and second chambers,
said template defining an opening in the frame assembly that corresponds at least in part to the outline of the hole to be cut;
and
a source of negative air pressure in selective air communication with the first and second chambers and operable to secure the frame assembly against the surface in a temporarily immobilized condition when the negative air pressure source is in air communication with either the first or second chambers to permit the hole to be cut in the surface using the template-defined opening as a guide.

3 more elements

A hole cutting tool for cutting a hole in a surface, said tool comprising:

a portable frame assembly adapted to be selectively placed against the surface in which the hole is to be cut,
said portable frame assembly defining at least one attachment chamber when the frame is placed against the surface;
a template supported in the frame assembly and defining an opening in the frame assembly that corresponds at least in part to the outline of the hole to be cut;
and
a source of negative air pressure in air communication with the attachment chamber and operable to secure the frame assembly against the surface in a temporarily immobilized condition to permit the hole to be cut in the surface using the template-defined opening as a guide,
said frame assembly including a plate and at least one gasket that cooperate to define said at least one attachment chamber when the frame is placed against the surface,
said gasket presenting a corrugated contact surface adapted to sealingly engage the surface in which the hole is to be cut when the frame assembly is placed there against,
said portable frame assembly including an additional gasket that cooperates with the plate to define an additional attachment chamber when the frame is placed against the surface,
said additional gasket presenting a corrugated contact surface adapted to sealingly engage the surface in which the hole is to be cut when the frame assembly is placed there against.

6 more elements

Dependencies are inferred from the claim text.

Hole cutting tool

Life of this patent

Hole cutting tool

Life of this patent

Abstract

Claims54